Stanford was a top aide with Jackson’s Rainbow PUSHCoalition, and The ENQUIRER ex­posed their long-term extramarital affair in a bombshell world exclu­sive in January 2001.

After admitting paternity, the former Democratic presidential hopeful paid court-ordered support and regularly visited Ashley (seen below several years ago) at Stanford’s Cali­fornia home for the past decade.

But according to the court documents, Jackson, who’s remained married to wife Jackie, failed to pay support from De­cember 2010 until August 2011, including minimal monthly fees of $400.

“Karin has tried so many times to work with Jesse on their financial agreement,” a source told The ENQUIRER. “But he was only paying when he felt like it, so she’s taking him to court.”